I have a vehicle with near 200,000 and still in most excellent condition. I maintain it and that helps. Anyway I replaced the whole of the exhaust system and plan on keeping the vehicle. If it needs a new engine or any other part,in the future, I will replace it so this purchase is a investment with me.
The quality of this product is 5 Star with me.

Flowmaster Universal Catalytic Converters - 49-State Legal Reviews

Great replacement for stock cats. Noticed significant increase in power and good sound with Flowmaster muffler . No problem with codes from o2 sensors with new parts. A lot less expensive then stock factory parts.